<nav class="navbar-default navbar-static-side" role="navigation">
    <div class="alert alert-success text-center">尊敬的{{login_user}}用户：你好！</div>
    <a href="/logout.html"><button type="button" class="btn btn-sm btn-warning" >退出登录</button></a>
    
    </br>
    </br>
    </br>

    <div class="sidebar-collapse">
        <ul class="nav" id="side-menu">

        {% autoescape off %}
        {{nav_html}}
        {% endautoescape %}

        </ul>
    </div>


</nav>